The FBI reveals that Anna Chapman is just one of a sprawling web of Russian agents on the loose in the United States. When President Obama closes out a round of diplomacy with Putin, a swarm of FBI officers swoop on the network of Russian spies, leading to one of history's biggest spy swaps. And when there's a spate of suspicious deaths among UK residents with links back to Russia, 10 Russian officers are sent packing, including Anna Chapman: a move that goes down badly in Moscow